Hot water tank control device



FIG. 1 is a front, top and side perspective view of the hot water tankcontrol device embodying the design of the present invention;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a side elevational view thereof, the opposite side elevationalview being identical thereto; and,

FIG. 5 is a top plan view thereof, the opposite bottom view beingidentical thereto.

The ornamental design for a hot water tank control device, as shown anddescribed.